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Message: [QUOTE="madman1234509, post: 560722, member: 3910"] Trying to help my friend diagnose a problem with his truck. It has the basics, spartan with deletes, egr delete with no waste gate, and a precision converter. The converter was just put in because he thought this shaking problem was due to the converter slipping, which ended up not being the case. The problem: Cruising down a flat road, between 55-65 mph, at light throttle, the truck will sometimes begin to shake violently. Almost as if the tires are way out of balance or the drive shaft is getting ready to come out of it. As soon as you give it a bit more throttle it goes away. The truck is is the 210 tow tune, late lock I believe. It started doing this with its previous edge tuner on it as well, they thought maybe because the edge didnt ramp up the transmission line pressures that it fried the converter. The truck isnt a street monster, only used for DD, towing, and plowing. I know people have had problems with this in the past, some pointed towards their aftermarket fuel rails. Has anyone else had this problem and successfully diagnosed it to something other then the fuel rails (which this truck doesnt have)? [/QUOTE]

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